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10-inch/31-caliber gun
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10"/31 caliber Mark 1 Mod 1/ 10"/35 caliber Mark 1 Mod 2/ 10"/30 caliber Mark 2 Naval Gun USS Miantonomoh BM-5 gun fitting 1890.jpg 300px Fitting one of the 10-inch main guns to the front turret of USS Miantonomoh (BM-5) at the New York Navy Yard, circa 1890. United States Naval gun YES YES 1890 United States Navy * Spanish–American War
World War I Bureau of Ordnance 1885 U.S. Naval Gun Factory $38,566.58Jamestown 1909 101 Mark 1 Mod 1, Mark 1 Mod 2 and Mark 2 Mark 1 Mod 1: 57500 lb (without breech)
Mark 1 Mod 2: 61000 lb (without breech)
Mark 2: 50200 lb (without breech) Mark 1 Mod 1: 329.1 in
Mark 1 Mod 2: 365.5 in
Mark 2: 329.1 in Mark 1 Mod 1: 312.8 in bore (31 calibers)
Mark 1 Mod 2: 349.54 in bore (35 calibers)
Mark 2: 300 in bore (30 calibers) 510 lb kg armor-piercing 10 in mm 3 1890s: 0.66 rounds per minute
1900s: 2 – 3 rounds per minute 2000 ft/s 20000 yd at 15° elevation Marks 1 and 2:-3° to +13.5°
Marks 3 and 4:−3° to +15° −150° to +150°
The 10"/31 caliber gun Mark 1 Mod 1 (spoken "ten-inch-thirty-one--caliber") and the 10"/35 caliber gun Mark 1 Mod 2 were both used for the primary batteries of the United States Navy's Amphitrite monitor 0 monitor Miantonomoh BM-5 2. The 10"/30 caliber gun Mark 2 was used as main armament on the remaining Amphitrite-class monitors, the monitor Monterey BM-6 2, and the armored cruiser Maine ACR-1 2.Navweaps 2016
The Navy's Policy Board called for a variety of large-caliber weapons in 1890, with ranges all the way up to 16 in 0 on out. This 10 in 0 on out gun had been in development since 1885. The Navy desired a lightweight heavy weapon with a 10-inch bore to arm their coastal monitors and the armored cruiser Maine, which would later be classified a "Second Class Battleship." The 10-inch/31 caliber gun would be the first heavy breech loader (BL) gun in the "New Navy" and be the ancestor to all large-caliber BL guns built in the United States.Navweaps 2016
Mark 1
The 10-inch Mark 1 was a built-up gun constructed in a length of 31 caliber, Mod 0 and Mod 1, and also 35 caliber, Mod 2. These were both mounted in pairs on Mianonomoh and numbered 1–4 by the Navy. Both of the Mod 0 and Mod 1 guns had a tube, jacket, with the Mod 1 having a thicker jacket, and 15 hoops with a locking ring. The hoops started 5.91 in 0 from the breech and extended to the muzzle. The Mod 2, was a 35 caliber gun of similar constructions but had only 14 hoops with a locking ring.Navweaps 2016 These were all constructed of gun steel.Friedman 2011 173
Mark 2
The Mark 2 was an even simpler construction with only 11 hoops, a different breech mechanism and reverting to a shorter, 30 caliber length, barrel. Eighteen were built, Nos. 5–26. These would be the guns used on the remaining Amphitrite-class monitors, Monterey, and Maine.Navweaps 2016Friedman 2011 173
Naval service
ShipGun InstalledGun MountMiantonomoh BM-5Mark 1 Mod 1: 10"/31 caliber
Mark 1 Mod 2: 10"/35 caliberMark 1: 2 × Twin TurretsAmphitrite BM-2Mark 2: 10"/30 caliberMark 2: 2 × twin turretsMonadnock BM-3Mark 2: 10"/30 caliberMark 2: 2 × twin turretsTerror BM-4Mark 2: 10"/30 caliberMark 4: 2 × twin turretsMonterey BM-6Mark 2: 10"/30 caliberMark 2: 1 × twin turretMaine ACR-1Mark 2: 10"/30 caliberMark 3: 2 × twin turrets
Surviving Guns
Two Mark 2 guns from USS Maine exist in Havana, Cuba, where they were incorporated into a memorial dedicated to victims of the ship's destruction.Spanamwar 2022
Notes
2
References
Books
https://books.google.com/books?id=dTtUAAAAIAAJ
Final Report of the Jamestown Ter-Centennial Commission
Washington Government Printing Office
1909
101
Jamestown 1909 101
Friedman
Norman
https://books.google.com/books?id=yh3OAwAAQBAJ
Naval Weapons of World War One
Seaforth Publishing
Norman Friedman
2011
173
978-1-84832-100-7
Online sources
http://www.navweaps.com/Weapons/WNUS_10-30_mk1.php
United States of America 10"/31 (25.4 cm) Mark 1 Mod 0 and Mod 1 10"/35 (25.4 cm) Mark 1 Mod 2 10"/30 (25.4 cm) Mark 2
Navweaps
25 July 2016
16 August 2016
Navweaps 2016
https://www.spanamwar.com/mainemonumenthavana
The Monument to the MAINE in Havana, Cuba
Spanamwar
6 December 2022
Spanamwar 2022
External links
Bluejackets Manual, 1917, 4th revision: US Navy 14-inch Mark 1 gun
June 2017
Category:Naval guns of the United States
Category:254 mm artillery